Title (en)

Method of removing petroleum substances from materials contaminated by them and equipment for carrying out this method

Title (de)

Verfahren zur Entfernung von Erdölsubstanzen aus damit verschmutzten Materialien und Einrichtung zur Durchführung dieses Verfahrens

Title (fr)

Procédé d'élimination de substances de pétrole à partir de matériaux contaminés par ces derniers et équipement pour la mise en oeuvre de ce procédé

Publication

EP 2862948 A1 20150422 (EN)

Application

EP 14466021 A 20141015

Priority

CZ 2013801 A 20131018

Abstract (en)

Method of removing petroleum substances from materials contaminated by them consists in the refining of the contaminated material by their indirect heating in a closed furnace space at temperatures from 250 to 750°C. The enclosed furnace space also is washed by a protective gas atmosphere with an oxygen content max. of 15 % by volume after which the mixture of gases and water vapour generated by evaporation and decomposition of the present petroleum substances and liquids from contaminated materials is removed from the closed furnace space and subjected to cooling and condensation. During refining, the materials contaminated with petroleum substances are mixed and after reaching the final heating temperature and termination of the refining process they are cooled by spraying water in an amount up to 300 l per 1000 kg of processed material, while during the condensation the non-condensed part of the mixture of gases and water vapour is discharged for further processing and / or at least partially as process gases they are returns to the refining process as process gasses. The equipment consists of a refining furnace (1) with a heat source (2) of indirect heating of the furnace chamber (3) and with a charging input (4) of materials contaminated by petroleum substances as well as discharge outlet (8) of materials freed from petroleum substances, which is provided with a charge mixing device (10), arranged in its furnace chamber (3) as well as supply input (6) of inert gas from a pressure source (7) and discharge pipeline (12) of the mixture of gas and the water vapour produced by decomposition and evaporation of liquids in the charge, to the condenser (13) with a branched outlet (15) of the individual condensation products.

IPC 8 full level

C22B 1/00 (2006.01); C22B 7/00 (2006.01)

CPC (source: EP)

C22B 1/00 (2013.01); C22B 7/00 (2013.01); Y02P 10/20 (2015.11)

Citation (applicant)

• EP 0373577 A1 19900620 - STILL OTTO GMBH [DE], et al
• DE 19715839 A1 19981022 - LOEDIGE MASCHBAU GMBH GEB [DE]
• AT 400579 B 19960125 - VOEST ALPINE IND ANLAGEN [AT], et al
• AT 409226 B 20020625 - VOEST ALPINE IND ANLAGEN [AT]

Citation (search report)

• [YD] AT 400579 B 19960125 - VOEST ALPINE IND ANLAGEN [AT], et al
• [Y] US 4872954 A 19891010 - HOGAN JIM S [US]
• [Y] JP H0734145 A 19950203 - NISSHIN STEEL CO LTD
• [Y] JP 2004027349 A 20040129 - HIROSHIMA GAS TECHNO KK
• [Y] EP 0421978 A1 19910410 - VOEST ALPINE STAHL [AT]
• [Y] US 4058205 A 19771115 - REED JR THOMAS G
• [Y] US 3939057 A 19760217 - REED JR THOMAS G
• [Y] US 2664389 A 19531229 - REX WALTER A, et al

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2862948 A1 20150422; CZ 2013801 A3 20141008; CZ 304773 B6 20141008

DOCDB simple family (application)

EP 14466021 A 20141015; CZ 2013801 A 20131018